Orifice Plates
From standard to conditioning and restriction designs - explore our full range of orifice plates for reliable differential pressure flow solutions.
Orifice, restriction, and flow conditioning plates are key in fluid systems. Orifice plates measure flow via pressure drop across a bore, with designs like concentric, eccentric, and segmental. Restriction plates limit flow or reduce pressure, often in compressor lines. Flow conditioning plates stabilise disturbed flow for accurate readings. These plates ensure reliable performance in demanding environments. Below is a detailed explanation of the products that Endress+Hauser offer.
Benefits
- Orifice Plates
• Multiple different designs for different conditions and process needs
• Cost-effective and widely standardised with standards such as ISO 5167
• Easy installation and maintenance and can be used with a wide variety of process fluids - Restriction Plates
• Effective for pressure reduction in high pressure and temperature conditions
• Customisable for pressure drops and enhanced system safety
• Compact design allows easy fitting between flanges and minimal impact on existing pipework - Flow Conditioning Plates
• Improved accuracy of downstream flow measurement while reducing the need for long straight pipe runs
• Suitable for high pressure and temperatures
• Ideal for tight or retrofit installations with various DP flow elements
Square Edge Orifice Plate
The square edge orifice plate is the most commonly used type of plate. They are used across a range of applications with Reynolds numbers of at least 5000. Key features of a square edge orifice plate include the sharp inlet edge and the chamfered outlet.
Quarter Circle Orifice Plate
The quarter circle orifice plate has a fully rounded leading edge and no cylindrical section. They are used in pipes containing liquids with low Reynolds numbers. The key feature of this type of orifice plate is the inlet shape being rounded, like one quarter of a circle.
Eccentric Orifice Plate
The eccentric orifice plate is used in service where severe entrainment may occur such as in dirty gas or liquids. They are used in cases where solids or slurries could plug the vent or drain holes on plates.
Conical Entrance Orifice Plate
This is another type of orifice plate with the primary job to create a restriction within a pipe. The inlet bore of a conical entrance orifice plate is conical in shape. These plates are primarily used in highly viscous fluids with low Reynolds numbers.
Segmental Orifice Plate
Similarly to the eccentric orifice plate, the design of this plate means the segmental hole of the plate should be offset from the centre. For gas flow, the hole should be offset downwards and for liquids, it should be offset upwards. Segmental bores are generally used for measuring liquids or gases that carry non-abrasive impurities such as sewage treatment.
Restriction Orifice Plate
Restriction orifice plates are devices installed in a pipeline to deliberately reduce flow or induce a pressure drop. Unlike standard orifice plates used for flow measurement, restriction plates are designed primarily for flow control or pressure reduction, often in safety-critical or high-pressure applications.
Flow Conditioner Plate
Flow conditioner plates are devices installed upstream of a flowmeter to correct distorted flow profiles caused by upstream disturbances, such as elbows, valves, or tees. Its primary function is to produce a fully developed, symmetrical velocity profile by eliminating swirl, turbulence, and asymmetry in the fluid flow.
